My car keeps dying out every time.?

This has been going on for a month, and its frustrating as it is. When I first notice this is when I tried to start the car it didn't make any noise at all, so I took my car to wood's marathon to charge up the battery. That wasn't it, it made a click-click sound but nothing else, so the second time I thought it needed a new battery and I thought that would have fixed everything right? No! the third time it happened it made no noise yet again, which I gave it to my uncle for him to check up on it to see what was wrong with it. He said the alternator, starter, and the battery were working fine, and he stated that its probably the electric system that's causing the problem? Honestly, I'm not sure if its that or something. Any ideas?